<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>下载安装 - Sale App</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background: linear-gradient(135deg, #f6f9fc 0%, #eef2f7 100%);
            min-height: 100vh;
        }
        .container {
            max-width: 800px;
            margin: 0 auto;
            padding: 20px;
        }
        .header {
            text-align: center;
            padding: 40px 0;
            animation: fadeInDown 1s ease-out;
        }
        @keyframes fadeInDown {
            from {
                opacity: 0;
                transform: translateY(-20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .logo {
            max-width: 150px;
            margin-bottom: 20px;
            filter: drop-shadow(0 4px 6px rgba(0,0,0,0.1));
            transition: transform 0.3s ease;
        }
        .logo:hover {
            transform: scale(1.05);
        }
        .title {
            font-size: 2.5em;
            color: #2c3e50;
            margin-bottom: 10px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
            background: linear-gradient(120deg, #2c3e50, #3498db);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .subtitle {
            color: #7f8c8d;
            font-size: 1.3em;
            font-weight: 300;
        }
        .download-section {
            background: white;
            border-radius: 20px;
            padding: 40px;
            margin: 30px 0;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            transform: translateY(0);
            transition: all 0.3s ease;
            animation: slideUp 0.8s ease-out;
        }
        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .download-section:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.15);
        }
        .download-button {
            display: inline-block;
            background: linear-gradient(135deg, #3498db, #2980b9);
            color: white;
            padding: 18px 50px;
            border-radius: 30px;
            text-decoration: none;
            font-size: 1.2em;
            margin: 20px 0;
            transition: all 0.3s ease;
            box-shadow: 0 5px 15px rgba(52,152,219,0.3);
        }
        .download-button:hover {
            background: linear-gradient(135deg, #2980b9, #2c3e50);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(52,152,219,0.4);
        }
        .instructions {
            background: white;
            border-radius: 20px;
            padding: 30px;
            margin-top: 30px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
            animation: fadeIn 1s ease-out;
        }
        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }
        .instructions h2 {
            color: #2c3e50;
            margin-bottom: 20px;
            font-size: 1.8em;
            position: relative;
            padding-bottom: 10px;
        }
        .instructions h2:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background: linear-gradient(90deg, #3498db, #2980b9);
            border-radius: 3px;
        }
        .instructions ol, .instructions ul {
            padding-left: 25px;
        }
        .instructions li {
            margin-bottom: 15px;
            position: relative;
            padding-left: 5px;
            line-height: 1.6;
            color: #34495e;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin-top: 40px;
        }
        .feature-item {
            background: white;
            padding: 25px;
            border-radius: 15px;
            text-align: center;
            transition: all 0.3s ease;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .feature-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.1);
        }
        .feature-icon {
            font-size: 2.5em;
            margin-bottom: 15px;
            color: #3498db;
        }
        @media (max-width: 600px) {
            .container {
                padding: 15px;
            }
            .header {
                padding: 30px 0;
            }
            .title {
                font-size: 2em;
            }
            .subtitle {
                font-size: 1.1em;
            }
            .download-button {
                padding: 15px 35px;
                font-size: 1.1em;
            }
            .download-section, .instructions {
                padding: 25px;
                border-radius: 15px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
        }
    </style>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.4/css/all.min.css">
</head>
<body>
    <div class="container">
        <header class="header">
            <img src="assets/images/logo.png" alt="Sale App Logo" class="logo">
            <h1 class="title">Sale App</h1>
            <p class="subtitle">您的智能销售助手</p>
        </header>

        <div class="download-section">
            <h2>下载应用</h2>
            <p>选择适合您设备的版本进行下载：</p>
            <a href="app-release.apk" class="download-button">
                <i class="fab fa-android"></i> 下载 Android 版本
            </a>
            <!-- iOS版本链接可以根据需要添加 -->
        </div>

        <div class="feature-grid">
            <div class="feature-item">
                <i class="fas fa-rocket feature-icon"></i>
                <h3>快速部署</h3>
                <p>简单几步即可完成安装，开始使用</p>
            </div>
            <div class="feature-item">
                <i class="fas fa-shield-alt feature-icon"></i>
                <h3>安全可靠</h3>
                <p>通过安全认证，保护您的数据</p>
            </div>
            <div class="feature-item">
                <i class="fas fa-sync feature-icon"></i>
                <h3>实时更新</h3>
                <p>持续优化，定期更新新功能</p>
            </div>
        </div>

        <div class="instructions">
            <h2>安装说明</h2>
            <ol>
                <li>点击上方的下载按钮，下载安装包到您的设备</li>
                <li>打开下载的安装包文件</li>
                <li>如果出现安全提示，请点击"设置"并允许"来自此来源的应用"</li>
                <li>按照安装向导的提示完成安装</li>
                <li>安装完成后，点击"打开"即可使用应用</li>
            </ol>
        </div>

        <div class="instructions">
            <h2>系统要求</h2>
            <ul>
                <li><i class="fas fa-mobile-alt"></i> Android 5.0 或更高版本</li>
                <li><i class="fas fa-hdd"></i> 至少 100MB 可用存储空间</li>
                <li><i class="fas fa-wifi"></i> 建议使用 WiFi 网络下载</li>
            </ul>
        </div>
    </div>
</body>
</html>